He Taketh It with His Eyes is a Special Assignment type of OptionalQuest in Monster Hunter World (MHW). Optional quests are repeatable and unlocked after completing specific points in the main story via Assignments. This quest was added in August 2nd 2018 with the introduction of the Behemoth monster.

It was a Behemoth, an Eorzean beast, in the Elder's Recess. Heed the moogle's advice, call upon other trustworthy hunt--- adventurers to help quell this terror!

He Taketh It with His Eyes Information

After completing The Legendary Beast, you can launch this quest from the Quest Board. Since a team is highly recommended for success, it is best to look for SOS signs and find a balanced DPS / Heals / Tanking group. Someone will have to keep attention of the monster in order for you to successfully land hard hits, so a lance user is a great idea.